Designing device.



T. LUND.

DBSIGNING DEVICE.

APPLIOATION FILED Inma, 190e.

Patented Aug. 29, 1911.

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MTA/55551 burra rares aan rie,

THOMAS LUND, OF BEVERLY, MASSACHUSETTS, ASSIGNOR TO UNITED SHOE MACHINERY COMPANY, NEW JERSEY.

O? PATERSON, NEW JERSEY, A CORPORATION OF DESIGNING DEVICE.

Lili-01,65%.

To all whom it may concern:

Be it known that I, THoMAs LUND, a citizen of the United States, residing at Beverly, in the county of Essex and Commonwealth of Massachusetts, have invented certain `improvements in Designing Devices, of which the following description, in connection with the accompanying drawings, is a specification, like reference characters on the drawings indicating like parts in the several figures.

This invention relates to devices for laying out templets or patterns when the work to be done lies in a plane curve.

More particularly the device is designed for laying out templets in which the design chosen lies in the arc of a circle, for instance, any one of the many designs used for orna inenting the toe-tips which are generally used in the manufacture of boots and shoes.

For simplicity and clearness, in vthe following description, the device will be treated in connection with the design or laying out of a templet or pattern for use in the manufacture of punch dies to be fitted in a toe-tip punching press, but it should be understood that the Vcapacity of the device is not limited to this particular class of work as with it any templet, wherein the design extends along a plane curved line, can be quickly and accurately laid out.

Heretofore, in designing templets for toetip punch dies, it has required a great deal of time and also a considerable degree of skill on the part of the workman to form a templet in which the holes, to be afterward used as guides for the tool used to drill the die block, extended along a fair curve and the proper distances apart. The ditliculty was proportionately increased if the design required a number of rows of holes. It is obvious that the describing of the simplest plane curve, an arc of a circle, or of several parallel arcs, and then stepping off on these arcs a series of location points, which may or may not be equal distances apart, is a long and tedious operation. If the design is to be laid out on a curve other than the arc of a circle the' difficulty is further increased.

By means of this device the time required for .laying out a templet of the nature referred to is greatly reduced and the device can be operated successfully by a workman of ordinary skill.

Specification of Letters Patent.

Application filed January 15, 1906.

Patented Aug.

29, 1911, Serial No. 296,122.

To accomplish these ends an anvil may be provided on which a templet blank is sustained while the device is manipulated to describe a curve of the chosen forni, and over this anvil is arranged a centering pin, prick punch, or other convenient scribing point by means of which the location points, to be used in forming t-he design, may be impressed upon the templet blank. Means are provided for enabling this scribing point to be moved across the templet blank, by steps of any desired length either in the arc of a circle or substantially any other plane curve. Means are .also provided for positioning the scribing point relatively to the anvil so that curves parallel to each other may be described one after the other. lf an arc of a circle is to be described on the templet blank the device is first set, with relation to an adjustable pivot pin, for the radius chosen and the feeding means are then manipulated to move the scribing point step by step in the direction in which the arc extends. If the design is in the form of a plane curve other t-han the arc of a circle the distance of the scribing point from its pivot is altered` through the adjustable positioning means, between each of the. feed steps according to the 'liexure of the particular curve required to be laid out. Such curves also require a'progressive increase or decrease in the length of step taken for each point impressed on the templet blank, the amount of such increase or decrease varying with the amount of curvature between any particular two points.

rllhe preferred means for initially setting the device to the chosen radius is here shown as comprising a support or bed-plate7 by which the anvil may be carried, having a pin projecting therefrom on which is adjustably pivoted a punch-carrying bar. rlllie pin is also adjustably mounted on the support so that any chosen radius for the punch, within reasonable limits, may be readily obtained. rIhe adjustable relation between the pivot pin and punch-carrying bar, when used in combination with a mechanism for giving to the bar a linear movement relative to the pivot and its support, enables the punch to be swung in arcs of concentric circles. the radius being lengthened or shortened without altering the position of the pivot. Such mechanism is preferably in the form of a micrometer screw having one of its relatively movable members connected to the pivot and the other connected to the punch-carrying bar. A similar mechanism is preferably employed for feeding the punch step by step across the templet blank. In this location one of the relatively movable micrometer screw members is connected to the punclrcarrying bar, as before, while the other is connected to the support or bedplate. 'Ihe points of connection are so con structed that the micrometer screw may be adjusted bodily relatively to the punch-carrying bar as may be required to prevent the parts 4from binding during the feed of the punch along curves of different fleXure.

The preferred embodiment of the invention is illustrated in the accompanying drawings in which Figure 1 is a perspective view of the device with a templet blank in place on the anvil; Fig. 2 is a vertical, longitudinal, sectional view through the adjusting mechanism; Fig. 3 is a vertical, transverse, sectional view through the feed mechanism; Fig. 4 is a vertical, sectional view on line 4 4 of Fig. 3 looking in the direction of the arrows; Fig. 5 is a plan view of a completed templet; and Fig. 6 shows a toe-tip for boots and shoes ornamented with one of the many designs that may be laid out with this device. Referring to the drawings, 10 is a support or bed-plate provided at one end with an anvil 12 the surface of which is preferably somewhat below the surface of the bed-plate. W'ith such a construction, when a templet blank 14 is placed on the anvil it can be adjusted in a position with its surface level with that of the bedplate. For holding the templet in position on the anvil a pair of holes 13 in the teinplet are arranged to fit over a pair of pins 15 projecting from the anvil. Bed-plate 10 is provided with a lon gitudinal slot 16 in the form of an inverted T extending centrally from anvil 12.

Adapted to rest upon the bedplate and to be moved thereover is a bar 18 carrying at one end an impressing device or scribing point as a prick punch 20. Bar 18 is provided with an undercut slot 22 having adjacent one of its sides a scale 23. The bedplate 10 and punch-carrying bar 18 are adjustably secured together preferably as follows. A pivot pin 24 is passed through slots 16 and 22, its lower end being threaded into a nut 26, preferably square, resting in the head of T-slot 16. Pin 24 carries intermediate its ends a collar 28 mounted im movably thereon in such position that it will rest in the enlarged undercut portion of slot 22. Collar 28 is circular so that bar 18 may have a turning movement thereabout, and is of slightly less thickness than the depth of that portion of slot 22 in which it is seated whereby any binding action between the bar and collar is avoided. Pin 24 is squared at its upper end and may be turned by a handle 30 into the nut 26 to clamp the pin in any desired position with relation to the length of the bed-plate.

Any convenient form of pointer may be arranged for showing the position of the pivot pin 24 with relation to scale 23. As here shown, a bridge piece 32 is swi eled on the pin, having side guides 31 to maintain it in correct alinement and a beveled edge 33 adjacent the scale to aid in obtaining a correct reading. Scale 23 is constructed to so determine the position of the pivot 24 on the bed-plate that punch 20 may be swung across the anvil in an arc of any desired radius within reasonable limits.

In order that points on parallel arcs may be impressed on a templet blank, means are provided for moving the punch-carrying bar relatively to the pivot pin without disturb ing the position of the latter. The preferred means for accomplishing this end are shown as a micrometer screw arrangement so that minute changes can readily be made. A bracket 34 is secured to bar 18 by a bolt 36 passing therethrough, and through slot 22, and then threaded into a nut 38 resting in the undercut portion of the slot and having a part 39 projecting into the upper portion of the slot to prevent accidental loosening. The bracket is provided with a tubular arm 40 extending longitudinally of the bar 18. A collar on the upper portion of pivot 24 is also provided with a tubular arm 42 adapted to telescope within one end of arm 40. A screw 44, provided with a collar 45 to prevent its being drawn forward, projects into the other end of tubular arm 40 and is t-hreaded into tubular arm 42. Screw /4 may be rotated through a milled head 46. A longitudinal scale is stamped upon arm 42 and a circumferential scale in collar 45 so that by turning head 46 the punch-carrying bar 18 may be moved past the pivot pin by very fine increments.

Then it is desired to adjust pivot 24 with relation to the bed-plate, bolt 36 must be loosened, then on loosening nut 26 by means of handle 30, the pivot and micrometer screws may be moved along slots 16 and 22, they being first alined, to the position desired, when the clamps are again rendered effective.

In order to render the device effective to space a series of location points either at the same or varying distances apart a micrometer screw similar to the one just described is used to conn-ect the punch-carrying end of bar 18 to the bed-plate, in such manner that the bar may be swung transversely about pivot pin 24 and across the anvil. A tubular arm 48 is pivotally connected to-bar 18 so as to move in a horizontal plane, as by passing a pin 50 through a pair of lugs on the bar and an eye 49, on

arm 48, which is placed therebetween. A bracket 52 mounted on the bed-plate supports rigidly, preferably by means of a pin connection 51, a second tubular arm 54 into one end of which arm 48 is telescoped. Relative motion is imparted to the two arms through a screw 56 provided with a collar 57 and milled head 58. The usual scales are provided on arm 48 and collar 57. It is sometimes found convenient to split the open end of arm 54, as shown in Fig. 4, and provide this end with a set screw 55 for tightening the connection with arm 48. If desired, a scale pointer 59, Fig. 3, may be mounted on sleeve 54.

It is obvious that in. moving punch 20 across the anvil for arcs of varying radii, unless means are provided for shifting the position of bracket 52, a binding action is liable to take place. To avoid this, bracket 52 is mounted adjustably in a preferably slightly curved slot 60 extending longitudinally of the bed-plate. In this slot, there is adapted to be adjustably clamped,

through a screw 62 and nut 63, a plate 64,

into which a pin 53 on bracket 52 is swiveled. This allows bracket 52, and with it the micrometer screw, to be .moved correspondingly when pivot pin 24 is moved for arcs of longer or shorter radii.

In operating the device, bar 18 is first brought in contact with a stop 66 which brings slots 16 and 22 into alinement and punch 20 substantially in the center of the width of a templet blank which has been positioned on anvil 12. Pivot pin 24 is then set, with relation to scale 23, so as to allow punch 20 to be drawn across the blank by the transversely-operating micrometer screw in an arc of the desired radius. Punch 20 is then struck to impress the first location point to be afterward drilled to proper size. Thereafter milled head 58 is turned to draw punch 20 in t-he direction of the arrow (Fig. 1) any desired distance representing the space between centers of the holes to be drilled. The punch is now in position for impressing the second location point, and the same steps will be taken in locating the centers of the remainder of the holes in this line. To locate the centers of another row of holes parallel to the first, milled head 46 is turned in the proper direction until the micrometer screw registers the distance it is desired the rows to be apart when the punch is again moved step by step along the new arc as above describ-ed.

It is obvious that the location points may be placed on curves other than arcs of circles by a proper manipulation of the adjusting and feed micrometer screws. Thus if between each transverse step the length of the radius be also changed, keeping the center the same, the curve laid out will be other than circular. This curve will be either condevice-will only be used for such curves as are symmetrical with respect to a median line and therefore only as many location points need be impressed as there are to be holes in one-half of the die to be made. A completed templet 100, for toe-tip work, is shown in Fig. 5 and when forming a die therefrom one-half the die block is iirst drilled and then the templet is turned and the other half of the block is drilled. A toe-tip 101 ornamented with a triple row of perforations, made in a machine-fitted with a die made from the templet shown in Fig. 5, is shown in Fig. 6.

While the invention has been described with particular reference to details of construction, it will be understood that it is not to be limit-ed thereto as the same may be embodied in widely varying forms and obviously some features of the invention may be used without others. Y

Having described my invention, what I claim as new and desire to secure by Letters Patent of the United States is 1. In a designing device, the combination with a support having a pin adjustable relatively to said support projecting therefrom, of a punch-carrying bar adjustably pivoted on said pin, and adjustable means for moving said bar lineally relatively to said pivot.

2. In a designing device, the combination with a slotted support and a slotted punchcarrying bar, of a pivot pin passing through said slots, means fo-r adjustably securing said pin to said support, and means connecting said pin and bar for effecting a relative movement therebetween.

3. In a designing devi-ce, the combination with a support and a punch-carrying bar, of means for adjust-ably connecting said support and bar, and means for locking said connecting means in position, said connecting means comprising means for moving said bar lineally relatively to said support without unlocking the connecting means.

4. In a designing device, the combination with a-support and means including a scribing point adjustably mounted thereon for describing plane curves, of means operating upon said first mentioned means in proximity to said scribing point for effecting a step-by-stepfeed of said describing means at measured intervals along said curves.

5. In a designing device, the combination with a support and means including a scribing point movably mounted thereon for describing a plane curve, of a micrometer screw connecting said support and describing means in proximity to said scriloingv plane curve, of means operating upon said first mentioned means in proximity to said scribing point and adjustable relatively to said describing means for effecting a stepby-step feed thereof at measured intervals along said curve.

7. ln a designing device, the combination with a support having a punch-carrying bar pivoted thereon for describing a plane curve, of feeding means associated with said bar in proximity to said punch for giving said bar an angular movement relatively to its pivot, said feeding means being arranged for angular adjustment with respect to said bar.

8. ln a designing device, the combination with a supporthaving a punch-carrying bar pivoted thereon for describing a plane curve, of means for feeding the punch along said curve, said means having a pivotal conneet-ion with said bar and a sliding connection with said support.

9. A designing device, comprising in combination, a support provided with a longitudinal pivot way, a pivot pin arranged in said way, a punch carrying bar pivoted upon said pin, means for clamping said pin in adjusted position in its way, and means for moving said bar relatively to said pin to vary the distance between said pun-ch and said pin.

l0. A designing device, comprising in combination, a support, a scribing point and a carrier therefor, two adjusting devices adjustably mounted upon said support and pivotally connected to said carrier at different points, one of said devices being adjustable upon said support in such manner that it may be broughtbodily into different angular relations to the other of said devices and to said carrier whereby said point may be moved in any direction.

11. A designing device, comprising in combination, a scribing point and a carrier therefor, a support provided with a plurality of guideways, adjusting devices adjustably mount-ed in said guideways and connected to said carrier at different points and indicating means upon each of said ad-A justing devices for determining the amount of movement in each direction of said scribing point.

12. A designing device, comprising in combination, a support, means pivoted thereto for describing a plane curve and two separate means for giving said describing means linear and angular movements relatively to its pivot, one of said last named two means being arranged to turn with said describing means about its pivot and the other of said last named two means being mounted upon the support and pivotally connected wit-h'said describing means.

13. A designing device, comprising in combination, a support having a scribing point and carrier therefor pivotally mounted thereon, means'connecting the carrier and pivot for moving said scribing point in one direction and adjustable means connecting the support and carrier for moving said seribing point in another direction.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

THOMAS LUND.

Witnesses i EDWARD H. PALMER, VARREN Gr. OGDEN.

Copies of this patent may be obtained for ve cents each, by addressing the Commissioner of Patents,

Washington. D. C. 

